Unidentified SOIC Component

Discussion in 'General Electronics Chat' started by mossman, Aug 5, 2013.

  1. mossman

    Thread Starter Member

    Aug 26, 2010
    I have a 6-pin SOIC component that I am having difficulty identifying. It has the markings "19B" and "33M" with a manufacturer logo consisting of three concentric circles. It is located in-line between the USB connector (Vcc pin) and power input of a thumb drive, so it is likely some sort of regulator.
    Last edited: Aug 5, 2013
  2. MrChips


    Oct 2, 2009
    Post a photo.
  3. Abovethelaw

    New Member

    Aug 2, 2013
    Probably ESD and/or OTG load switch. Like Chips said, we need a photo.
  4. mossman

    Thread Starter Member

    Aug 26, 2010
    Can't post a pic unfortunately. It is a 1.8 mm x 2 mm SOIC chip with 6 pins and markings "19B" and "33M". Power connected to pin 1 and 6, ground to pin 2, and pin 4 is the output (pins 3 and 5 are NC). The input connects to the power pin of a 4-pin USB connector and the output goes to the VDD plane on the thumb drive PCB. Sorry, but this is all the information I have.
    Last edited: Aug 7, 2013